Our advantage:   1. All the product we sell are 100% tested ok with test report. we can promise the quality.   2. 45 days warranty available from the date we sell the product.   3. we have specialized in this field for 7 years with professional engineers and repair team.Returned Product Clauses:    A. Only accept the item we sell,    B. Need the list of returns with the product No and Qty    C. The returns need our Bar No., Label, and our test report, Or we could not recognize our products sold.    D. Only accept the following to be returned:  delivery damage on the way to buyer, and product repairing within 45days warranty    E. The delivery expenses: a. We only take the one on the way here; the rest due to the buyer.Packing Method:    each wrapped with foam into a static bag, 2pcs/inner box,10 boxes/